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package zhangpgil.photo;
import java.io.File;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
public class MainActivity extends ActionBarActivity {
/* 头像文件 */
private static final String IMAGE_FILE_NAME = "temp_head_image.jpg";
/* 请求识别码 */
private static final int CODE_GALLERY_REQUEST = 0xa0;
private static final int CODE_CAMERA_REQUEST = 0xa1;
private static final int CODE_RESULT_REQUEST = 0xa2;
// 裁剪后图片的宽(X)和高(Y),480 X 480的正方形。（生成bitmap貌似有时要报错？可试下把大小弄小点）
private static int output_X = 480;
private static int output_Y = 480;
private ImageView headImage = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
headImage = (ImageView) findViewById(R.id.imageView);
Button buttonLocal = (Button) findViewById(R.id.buttonLocal);
buttonLocal.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
choseHeadImageFromGallery();
}
});
Button buttonCamera = (Button) findViewById(R.id.buttonCamera);
buttonCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
choseHeadImageFromCameraCapture();
}
});
}
// 从本地相册选取图片作为头像
private void choseHeadImageFromGallery() {
Intent intentFromGallery = new Intent();
// 设置文件类型
intentFromGallery.setType("image/*");
intentFromGallery.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intentFromGallery, CODE_GALLERY_REQUEST);
}
// 启动手机相机拍摄照片作为头像
private void choseHeadImageFromCameraCapture() {
Intent intentFromCapture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 判断存储卡是否可用，存储照片文件
if (hasSdcard()) {
intentFromCapture.putExtra(MediaStore.EXTRA_OUTPUT, Uri
.fromFile(new File(Environment
.getExternalStorageDirectory(), IMAGE_FILE_NAME)));
}
startActivityForResult(intentFromCapture, CODE_CAMERA_REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
// 用户没有进行有效的设置操作，返回
if (resultCode == RESULT_CANCELED) {
Toast.makeText(getApplication(), "取消", Toast.LENGTH_LONG).show();
return;
}
switch (requestCode) {
case CODE_GALLERY_REQUEST:
cropRawPhoto(intent.getData());
break;
case CODE_CAMERA_REQUEST:
if (hasSdcard()) {
File tempFile = new File(
Environment.getExternalStorageDirectory(),
IMAGE_FILE_NAME);
cropRawPhoto(Uri.fromFile(tempFile));
} else {
Toast.makeText(getApplication(), "没有SDCard!", Toast.LENGTH_LONG)
.show();
}
break;
case CODE_RESULT_REQUEST:
if (intent != null) {
setImageToHeadView(intent);
}
break;
}
super.onActivityResult(requestCode, resultCode, intent);
}
/**
* 裁剪原始的图片
*/
public void cropRawPhoto(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
// 设置裁剪
intent.putExtra("crop", "true");
// aspectX , aspectY :宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX , outputY : 裁剪图片宽高
intent.putExtra("outputX", output_X);
intent.putExtra("outputY", output_Y);
intent.putExtra("return-data", true);
startActivityForResult(intent, CODE_RESULT_REQUEST);
}
/**
* 提取保存裁剪之后的图片数据，并设置头像部分的View
*/
private void setImageToHeadView(Intent intent) {
Bundle extras = intent.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
headImage.setImageBitmap(photo);
}
}
/**
* 检查设备是否存在SDCard的工具方法
*/
public static boolean hasSdcard() {
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED)) {
// 有存储的SDCard
return true;
} else {
return false;
}
}
}
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
<Button
android:id="@+id/buttonLocal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="本地相册选取头像" />
<Button
android:id="@+id/buttonCamera"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="手机拍照选取头像" />
</LinearLayout>
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以上所述就是本文的全部内容了，希望大家能够喜欢。